Set decimal places without rounding in Design studio crosstab

I am working on a crosstab in design studio 1.6 SP4. The requirement is to display the measures with 1 digit after the decimal. I have set the decimal value to 1 place in edit initial view and it displays the measure value upto 1 decimal place.

The problem is if there is a number like 4.67 then the value displayed is 4.7 whereas the requirement is to display 4.6 i.e. without rounding of the number.